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Recognised as Colour

#587FCB

  • #587FCB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#587FCB is a blue with RGB values 88, 127, 203 and HSL 220°, 53%, 57%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#587FCB#587FCB
HEX#587FCB
RGBrgb(88, 127, 203)
RGB (0–1)0.3451, 0.498, 0.7961
RGB percentages34.5%, 49.8%, 79.6%
HSLhsl(219.7, 52.5%, 57.1%)
HSV / HSBhsv(219.7, 56.7%, 79.6%)
CMYK56.7%, 37.4%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,799,883
CSS custom property--colour: #587FCB;

Brightness & contrast

Relative luminance0.21565WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.31:1
Contrast with white3.95:1WCAG normal text: Fail
Contrast with black5.31:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#A78034

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6086CEno red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#517BC9no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#00909Bno blue cones; rare, and affects men and women equally; ΔE 46.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.95:1WCAG large text: AA
Contrast with black, large text5.31:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.2Steel blue · ΔE 17.3Dodgerblue · ΔE 20.7Royal blue · ΔE 28.3Dark slateblue · ΔE 28.5Medium purple · ΔE 28.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CBA458
Analogous#58B8CB, #6B58CB
Triadic#CB587F, #7FCB58
Split complementary#CB6B58, #B8CB58
Tetradic#CB58B8, #CBA458, #58CB6B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F6FB
Lighter +30%#CDD8EF
Lighter +20%#A6BBE3
Lighter +10%#7F9DD7
Darker −10%#3964B7
Darker −20%#2D4F90
Darker −30%#213969
Darker −40%#152442
More saturated +25%#3D76E6
Less saturated −25%#7388B0

Channel breakdown

R88
G127
B203
Red88 (34.5%)
Green127 (49.8%)
Blue203 (79.6%)
Hue219.65°
Saturation (HSL)52.51%
Lightness57.06%
Dominant channelBlue
Hex per channelR 58 · G 7F · B CB

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Every value on this page was computed from “587fcb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.